Describe the levels of organisation in the body, moving from a cell to a working human being.

Sure, here are the levels of organization in the body, moving from a cell to a working human being:

1. Cell: This is the basic unit of life. All living organisms are composed of cells. In the human body, there are many different types of cells, including skin cells, blood cells, and nerve cells.

2. Tissue: A tissue is a group of similar cells that work together to perform a specific function. There are four basic types of tissues in the human body: epithelial tissue (covers body surfaces and lines body cavities), connective tissue (supports and binds other tissues), muscle tissue (responsible for movement), and nervous tissue (receives stimuli and sends the impulse to the spinal cord and brain).

3. Organ: An organ is a structure that is composed of at least two or more tissue types and performs a specific set of functions for the body. Examples include the heart, lungs, and liver.

4. Organ System: An organ system is a group of organs that work together to perform a major function. For example, the cardiovascular system, which includes the heart, blood, and blood vessels, circulates blood throughout the body.

5. Organism: The highest level of organization is the organism itself, in this case, a human being. A human being is a complex organism that is made up of many organ systems working together to ensure survival and reproduction.